Lake Washington–Cedar River watershed
E132463
The Lake Washington–Cedar River watershed is a major hydrological basin in the Seattle metropolitan area that drains water from the Cedar River and surrounding tributaries into Lake Washington and ultimately Puget Sound.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Lake Washington watershed | 4 |
| Cedar River Municipal Watershed | 2 |
| Cedar River Watershed | 2 |
| Lake Washington drainage basin | 2 |
| Cedar River watershed | 1 |
| Lake Washington–Cedar River watershed canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1154870 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Lake Washington–Cedar River watershed Context triple: [Lake Washington, partOf, Lake Washington–Cedar River watershed]
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A.
Cedar River
Cedar River is a major river in Iowa and Minnesota known for flowing through cities like Cedar Rapids and contributing significantly to the region’s ecology and economy.
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B.
La Mesa Watershed
La Mesa Watershed is a protected forest and reservoir area in Quezon City that serves as a major source of drinking water and a key urban green space for Metro Manila.
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C.
Northwestern Washington
Northwestern Washington is a geographic region of the U.S. state of Washington encompassing its far northwestern counties along the Strait of Juan de Fuca and Puget Sound.
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D.
Menominee River
The Menominee River is a major river forming part of the border between Wisconsin and Michigan’s Upper Peninsula, known for its forests, hydroelectric dams, and role as a key tributary in the Great Lakes watershed.
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E.
Waban
Waban is a village in the city of Newton, Massachusetts, known for its residential character and Green Line D branch MBTA station.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Lake Washington–Cedar River watershed Target entity description: The Lake Washington–Cedar River watershed is a major hydrological basin in the Seattle metropolitan area that drains water from the Cedar River and surrounding tributaries into Lake Washington and ultimately Puget Sound.
-
A.
Cedar River
Cedar River is a major river in Iowa and Minnesota known for flowing through cities like Cedar Rapids and contributing significantly to the region’s ecology and economy.
-
B.
La Mesa Watershed
La Mesa Watershed is a protected forest and reservoir area in Quezon City that serves as a major source of drinking water and a key urban green space for Metro Manila.
-
C.
Northwestern Washington
Northwestern Washington is a geographic region of the U.S. state of Washington encompassing its far northwestern counties along the Strait of Juan de Fuca and Puget Sound.
-
D.
Menominee River
The Menominee River is a major river forming part of the border between Wisconsin and Michigan’s Upper Peninsula, known for its forests, hydroelectric dams, and role as a key tributary in the Great Lakes watershed.
-
E.
Waban
Waban is a village in the city of Newton, Massachusetts, known for its residential character and Green Line D branch MBTA station.
- F. None of above. chosen
Statements (46)
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Lake Washington–Cedar River watershed Description of subject: The Lake Washington–Cedar River watershed is a major hydrological basin in the Seattle metropolitan area that drains water from the Cedar River and surrounding tributaries into Lake Washington and ultimately Puget Sound.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Cedar River watershed
Lake Washington–Cedar River watershed
→
contains
→
Lake Washington–Cedar River watershed
self-linksurface differs
ⓘ
this entity surface form:
Cedar River Municipal Watershed
subject surface form:
Cedar River (Washington)
this entity surface form:
Lake Washington watershed
subject surface form:
Cedar River (Washington)
this entity surface form:
Cedar River Municipal Watershed
this entity surface form:
Lake Washington drainage basin
this entity surface form:
Lake Washington watershed
this entity surface form:
Lake Washington watershed
this entity surface form:
Cedar River Watershed
this entity surface form:
Cedar River Watershed
this entity surface form:
Lake Washington drainage basin
this entity surface form:
Lake Washington watershed